CN211405551U - Battery distribution box shell and battery distribution box - Google Patents

Abstract

The utility model relates to the technical field of batteries, and discloses a battery distribution box shell and a battery distribution box. The battery distribution box shell includes a lower casing, and a capacitor capable of accommodating a pre-charging resistance is arranged on the lower casing. The housing of the battery distribution box includes a stopper part arranged on the lower casing, and the stopper part is arranged to be capable of blocking the pre-charging resistor from coming out of the accommodating slot. The battery distribution box shell can make the assembly of the pre-charging resistor more convenient. By arranging the battery distribution box shell provided by the utility model in the battery distribution box, the assembly of the pre-charging resistors can be facilitated, and the pre-charging resistors are not easily removed, which greatly improves the use safety of the battery distribution box. sex.

Description

Battery Distribution Box Enclosures and Battery Distribution Boxes

technical field

The utility model relates to the technical field of batteries, in particular to a battery distribution box shell and a battery distribution box.

Background technique

The battery distribution box is an essential part of the power battery pack. The electrical system of the battery distribution box usually integrates the main positive control circuit, the main negative control circuit, the precharge circuit, and the voltage and current detection circuits. The electrical components included are the main positive contactor, the main negative contactor, and the precharge contactor. , pre-charging resistors, shunts and battery sensors, etc., the number of electrical components is large and connected to each other through wire harnesses.

The battery pack needs to charge the capacitor at the initial stage of each power-on. If it is not limited, the charging current will be too large, which will cause a great impact on the power supply and rectifier components. Therefore, a pre-charging resistor needs to be used to limit the current.

At present, the pre-charging resistors are fixed on the battery distribution box by means of additional brackets, which not only reduces the utilization rate of the internal space, but also makes it difficult for the assemblers of the battery distribution box to operate, increasing the man-hours and resulting in higher assembly time. cost.

Utility model content

The purpose of this utility model is to overcome the inconvenience of assembling a pre-charging resistor on a battery distribution box in the prior art, and to provide a battery distribution box casing that enables the assembly of the pre-charging resistor. more convenient.

In order to achieve the above purpose, one aspect of the present utility model provides a battery distribution box shell, the battery distribution box shell includes a lower shell, and an accommodating groove capable of accommodating a pre-charging resistor is provided on the lower shell, so The battery distribution box shell includes a stopper part arranged on the lower casing, and the stopper part is arranged to be capable of blocking the pre-charging resistor from escaping from the accommodating slot.

In the above technical solution, by setting an accommodating slot capable of accommodating the pre-charging resistor and a stopper capable of preventing the pre-charging resistor from falling out of the accommodating slot, the battery distribution box will not be shaken by the outside during transportation or use. And make the pre-charge resistance come out, greatly reduce the safety hazard and improve customer satisfaction.

Preferably, the stopper portion includes a stopper elastic arm disposed on the lower housing, the stopper elastic arm is configured to swing toward the outside of the accommodating groove, and the stopper portion includes a stopper elastic arm provided On the stopper boss of the stopper elastic arm protruding toward the accommodating slot, the stopper boss can block the pre-charging block from coming out of the accommodating slot.

Preferably, a notch is formed on the groove wall of the accommodating groove, wherein the stop elastic arm is arranged in the notch.

Preferably, a wall of the stop boss facing the central axis of the accommodating groove is configured as an inclined wall, and the inclined wall is at the same distance from the notch of the accommodating groove to the accommodating groove and the accommodating groove. The direction of the bottom wall opposite to the notch gradually approaches the central axis of the accommodating groove.

Preferably, the battery distribution box housing includes a first rib that is disposed on the circumferential wall of the accommodating groove and protrudes toward the accommodating groove, and the first rib is configured to be able to be accommodated in the accommodating groove. The pre-charging resistors in the accommodating groove are in close contact.

Preferably, the battery distribution box shell includes a plurality of the first ribs, and the plurality of the first ribs are arranged on the circumferential wall of the accommodating groove at intervals.

Preferably, the precharging resistor includes a precharging resistor body and a pair of terminals disposed on the precharging resistor body;

A pair of via holes through which the corresponding terminals pass through are respectively provided on the bottom wall of the accommodating groove opposite to the notch of the accommodating groove.

Preferably, a bottom wall of the accommodating groove opposite to the notch of the accommodating groove is provided with an installation opening;

The battery distribution box shell includes an elastic arm connected to the installation opening and a second protruding rib disposed on the elastic arm and protruding toward the accommodating groove, and the elastic arm can drive the first rib. The second rib swings back and forth in the direction from the inside of the accommodating groove to the outside of the accommodating groove so that the second rib can interact with the pre-charging resistor toward the accommodating groove. The walls of the bottom wall are in close contact.

Preferably, the battery distribution box housing includes a slot wall disposed on the accommodating slot and outside the accommodating slot, and the insertion slot can be used for the insertion of the plug-in of the battery distribution box. arm insertion.

A second aspect of the present invention provides a battery distribution box, which includes the battery distribution box shell provided by the present invention. By arranging the battery distribution box shell provided by the utility model in the battery distribution box, the assembly of the pre-charging resistor can be facilitated, and the pre-charging resistor is not easy to come off, which greatly improves the use safety of the battery distribution box. sex.

Description of drawings

1 is a schematic bottom view of the structure of the battery distribution box housing of the preferred embodiment of the present invention equipped with a pre-charging resistor, wherein the pre-charging resistor is assembled in the accommodating groove;

2 is a schematic diagram of the overall structure of the accommodating groove of the battery distribution box shell according to the preferred embodiment of the present invention;

3 is a schematic cross-sectional structural diagram of a stopper in the structural schematic diagram shown in FIG. 2;

FIG. 4 is a partial structural schematic diagram of the battery distribution box housing shown in FIG. 2 , wherein a plug-in slot disposed on the top of the accommodating slot and outside the accommodating slot is shown;

5 is a schematic structural diagram of a state in which a plug-in is assembled at the plug-in slot of the battery distribution box casing shown in FIG. 4;

FIG. 6 is a schematic three-dimensional structural diagram of a precharge resistor in the structural schematic diagram shown in FIG. 1 .

Description of reference numerals

12-lower housing; 14-accommodating groove; 140-first rib; 142-through hole; 144-installation opening; 16-stop part; 160-stop elastic arm; 162-stop boss; 164 - inclined wall; 180 - elastic arm; 182 - second rib; 19 - plug slot; 20 - pre-charging resistor; 22 - pre-charging resistor body; 24 - terminal;

Detailed ways

In the present utility model, unless otherwise stated, the use of orientation words such as "up, down, left and right" generally refers to the understanding in combination with the orientation shown in the accompanying drawings and practical applications, "inside, outside" Refers to the inside and outside of the outline of the part.

The utility model provides a battery distribution box shell, the battery distribution box shell includes a lower shell 12, it can be understood that the battery distribution box shell can also include an upper shell (not shown in the figure). ), the upper shell and the lower shell 12 can be assembled together to form the battery distribution box shell, the lower shell 12 is provided with an accommodating slot 14 that can accommodate the pre-charging resistor 20, and the battery distribution box shell The stopper portion 16 is provided on the lower case 12 , and the stopper portion 16 is configured to block the pre-charging resistor 20 from coming out of the accommodating slot 14 . By providing the accommodating groove 14 capable of accommodating the pre-charging resistor 20 and the stopper 16 capable of preventing the pre-charging resistor 20 from coming out of the accommodating groove 14, the battery distribution box will not be affected by external factors during transportation or use. Shaking makes the pre-charging resistor 20 come out, which greatly reduces the potential safety hazard and improves customer satisfaction. It should be noted that the accommodating groove 14 may be provided in the free part of the lower casing 12 , in addition, the notch of the accommodating groove 14 may be located at the bottom of the lower casing 12 , and the accommodating groove 14 opposite to the notch The bottom wall is then located above the slot.

1 , 2 and 3 , the stopper portion 16 may include a stopper elastic arm 160 disposed on the lower housing 12 , and the stopper elastic arm 160 may be disposed in a direction capable of facing the outside of the accommodating groove 14 Swinging, the blocking portion 16 may include a blocking boss 162 disposed on the blocking elastic arm 160 and protruding toward the accommodating groove 14 . During the process of assembling the pre-charging resistor 20 into the accommodating slot 14 , the blocking elastic arm 160 can swing toward the outside of the accommodating slot 14 , so as to avoid the pre-charging resistor 20 so that the pre-charging resistor 20 can be easily assembled into the accommodating slot 14 and after the pre-charging resistor 20 is assembled into the accommodating slot 14 , the stop elastic arm 160 can swing toward the inner direction of the accommodating slot 14 and return to the initial position.

In addition, a notch can be formed on the groove wall of the accommodating groove 14, wherein the stop elastic arm 160 can be arranged in the notch, so that the preparation is convenient. For example, the stop elastic arm 160 and the accommodating groove 14 can be formed as It is an integral piece, thereby improving the stability of the overall structure; at the same time, the blocking boss 162 can better play a blocking role under the driving action of the blocking elastic arm 160 .

2 and 3, the wall of the stopper boss 162 facing the central axis of the accommodating groove 14 is preferably provided as an inclined wall 164, and the sloping wall 164 extends from the notch of the accommodating groove 14 to the accommodating groove The direction of the bottom wall of 14 opposite to the notch gradually approaches the central axis of the accommodating groove 14 . By arranging the inclined wall 164 , it can play a guiding role when assembling the pre-charging resistor 20 in the accommodating groove 14 , so as to facilitate the assembling of the pre-charging resistor 20 .

As shown in FIG. 2 , the circumferential wall of the accommodating groove 14 may be provided with a first rib 140 protruding toward the accommodating groove 14 , the first rib 140 may be located in the accommodating groove 14 , and the first rib 140 may be located in the accommodating groove 14 . It is arranged so as to be in close contact with the precharge resistor 20 accommodated in the accommodating groove 14 . By arranging the first rib 140 , the pre-charging resistor 20 can be stably accommodated in the accommodating slot 14 , and is not easy to shake or come out of the accommodating slot 14 , which further improves the safety of the system.

In order to further improve the stability of the pre-charging resistor 20 after assembly, a plurality of first ribs 140 may be provided, and the plurality of first ribs 140 may be arranged on the circumferential wall of the accommodating groove 14 at intervals.

As shown in FIG. 6 , the pre-charging resistor 20 may include a pre-charging resistor body 22 and a pair of terminals 24 disposed on the pre-charging resistor body 22 ; A pair of via holes 142 through which the corresponding terminals 24 are respectively passed are provided, thereby facilitating the assembly of the pre-charging resistor 20 .

As shown in FIG. 2 , an installation port 144 may be provided on the bottom wall of the accommodating groove 14 opposite to the notch of the accommodating groove 14 ; in addition, an elastic arm 180 connected to the installation port 144 and an elastic arm 180 may be provided. 180 and protruding toward the accommodating groove 14, the second rib 182 can be located in the accommodating groove 14, and the elastic arm 180 can drive the second rib 182 along the direction from the interior of the accommodating groove 14 to the accommodating groove 14. The direction of the outside of the groove 14 swings back and forth so that the second rib 182 can be in close contact with the bottom wall of the pre-charging resistor 20 facing the accommodating groove 14 . During the transportation or use of the battery distribution box, shaking will inevitably occur, and the pre-charging resistor 20 assembled in the accommodating slot 14 will also shake accordingly. By setting the elastic arm 180, the first The two protruding ribs 182 follow the pre-charging resistor 20 to perform adaptive shaking, so that the second protruding ribs 182 can better match the wall of the pre-charging resistor 20 facing the bottom wall of the accommodating slot 14 , that is, the pre-charging resistor 20 . The walls where the terminals 24 are located are in close contact, which further reduces the probability of the pre-charging resistor 20 coming out of the accommodating groove 14 . In addition, the arrangement of the second protruding ribs 182 will occupy the space of the accommodating groove 14, but since the elastic arm 180 can swing back and forth in the direction from the inside of the accommodating groove 14 to the outside of the accommodating groove 14, even the second The size error of the rib 182 and the original design is relatively large, and it will not affect the installation of the pre-charging resistor 20 . In this way, the manufacturing precision of the second rib 182 is also reduced.

In order to facilitate the installation of the plug-in 26 of the battery distribution box, such as the high-voltage collection plug-in, as shown in FIG. 4 and FIG. 19 is capable of being inserted into the plug-in arm 260 of the plug-in 26 of the battery distribution box. Wherein, the insertion slot 19 can be disposed on the bottom wall of the accommodating slot 14 opposite to the slot.

The utility model also provides a battery distribution box, the battery distribution box includes the battery distribution box shell provided by the utility model. By arranging the battery distribution box shell provided by the present invention in the battery distribution box, the assembly of the pre-charging resistor 20 can be facilitated, and the pre-charging resistor 20 is not easy to come out, which greatly improves the use safety of the battery distribution box. sex.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention. Include individual specific technical features combined in any suitable manner. In order to avoid unnecessary repetitions, various possible combinations are not described in the present invention. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention, and all belong to the protection scope of the present invention.

Claims (10)

1. The battery distribution box shell is characterized by comprising a lower shell (12), wherein a containing groove (14) capable of containing a pre-charging resistor (20) is formed in the lower shell (12), the battery distribution box shell comprises a stopping portion (16) arranged on the lower shell (12), and the stopping portion (16) is arranged to block the pre-charging resistor (20) from falling out of the containing groove (14).

2. The battery distribution box housing according to claim 1, wherein the stopper (16) comprises a stopper elastic arm (160) disposed on the lower case (12), the stopper elastic arm (160) is configured to swing toward an outer direction of the accommodating groove (14), the stopper (16) comprises a stopper boss (162) disposed on the stopper elastic arm (160) and protruding toward the accommodating groove (14), and the stopper boss (162) is configured to block the pre-charging resistor (20) from coming out of the accommodating groove (14).

3. The battery distribution box housing according to claim 2, wherein the walls of the receiving groove (14) are notched, wherein: the stop spring arm (160) is disposed within the notch.

4. The battery distribution box housing according to claim 3, wherein a wall of the stopper boss (162) toward the center axis of the accommodation groove (14) is provided as an inclined wall (164), the inclined wall (164) gradually approaching the center axis of the accommodation groove (14) in a direction from a notch of the accommodation groove (14) to a bottom wall of the accommodation groove (14) opposite to the notch.

5. The battery distribution box housing according to claim 1, comprising a first rib (140) provided at a circumferential wall of the accommodation groove (14) and protruding toward the inside of the accommodation groove (14), the first rib (140) being provided so as to be capable of coming into close contact with the pre-charging resistor (20) accommodated in the accommodation groove (14).

6. A battery distribution box housing according to claim 5, comprising a plurality of said first ribs (140), said plurality of said first ribs (140) being spaced apart from a circumferential wall of said receiving groove (14).

7. The battery distribution box housing according to claim 1, wherein the pre-charge resistor (20) comprises a pre-charge resistor body (22) and a pair of terminals (24) provided to the pre-charge resistor body (22);

and a pair of through holes (142) for the corresponding terminals (24) to pass through are formed in the bottom wall of the accommodating groove (14) opposite to the notches of the accommodating groove (14).

8. The battery distribution box housing according to claim 1, wherein a mounting opening (144) is opened on a bottom wall of the receiving groove (14) opposite to the notch of the receiving groove (14);

the battery distribution box shell comprises an elastic arm (180) connected to the mounting opening (144) and a second convex rib (182) arranged on the elastic arm (180) and protruding towards the inside of the accommodating groove (14), wherein the elastic arm (180) can drive the second convex rib (182) to swing back and forth along the direction from the inside of the accommodating groove (14) to the outside of the accommodating groove (14) so that the second convex rib (182) can be in close contact with the wall, facing the bottom wall of the accommodating groove (14), of the pre-charging resistor (20).

9. The battery distribution box housing according to any of claims 1 to 8, characterized in that it comprises a plug-in slot (19) arranged in a wall of the receiving slot (14) and outside the receiving slot (14), said plug-in slot (19) being insertable by a plug-in arm (260) of a plug-in (26) of a battery distribution box.

10. A battery distribution box, characterized in that it comprises a battery distribution box housing according to any of claims 1-9.

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